Home / 72,174.15-99,596.30-39,906.90

Finding the Fourth Proportional to 72,174.15, 99,596.30 and 39,906.90

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Solution

The fourth proportional to 72,174.15, 99,596.30 and 39,906.90 is: 55,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,174.15 : 99,596.30 = 39,906.90 : x
  2. Step 2: Convert to fraction form
    72,174.15/99,596.30 = 39,906.90/x
  3. Step 3: Cross multiply
    72,174.15x = 99,596.30 × 39,906.90
  4. Step 4: Simplify right side
    72,174.15x = 3,974,579,584.47
  5. Step 5: Solve for x
    x = 3,974,579,584.47/72,174.15
  6. Step 6: Final answer
    x = 55,069.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.